- Pyrite Included in Quartz
- Small Cabinet, 8.4 x 5.8 x 4.6 cm
- Buenopolis, Minas Gerais, Brazil
- Ex. Philadelphia Academy of Natural Sciences
Inclusions in quartz are not unusual, however in this polished fragment of quartz is a most unusual one. A euhedral crystal of splendent, bright pyrite, 2.0 cm across, is joined by two smaller pyrite inclusions in the quartz. Superb example of this rare high-quality included quartz that came out in the 1950s. Ex Philadelphia Academy of Natural History collection.